1. How do you move continually when holding a key down? - use the built in objectMover
2A. Timer Examples in Alice 3 with counters as well.
2B. How do you add a timer that counts down? - Creating a timer - Creating a timer that keeps track of elapsed time
2C. How to create a timer without using the built in timer listener - Creating a Timer.
3. Can you change the length of a wall to make it longer or do you just need to add multiple walls?
Alice 3 Programming Guide - page 105 Collision Detector Listener for a Scene - Proximity Detectors page 107
How to make a UFO Rescue Game